2022 Analog Electronics Technique(Huazhong University of Science and Technology)1467034479 最新满分章节测试答案

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本课程起止时间为:2022-02-14到2022-06-28

Lecture 1 The Ideal Operational Amplifier Test questions for The Ideal Operational Amplifier

1、 问题:The two input terminals of an operational amplifier are labeled as:
选项：
A:high and low
B:positive and negative
C:inverting and noninverting
D:differential and nondifferential
答案: 【inverting and noninverting】

2、 问题:For the circuit in  the Figure, the output voltage vo is (    ).
选项：
A:-6V
B:-5V
C:-1V
D:-0.2V
答案: 【-5V】

3、 问题:For the circuit in Figure, the current ix is (    )
选项：
A:0.6mA
B:0.5mA
C:0.2mA
D:1/12 mA
答案: 【0.5mA】

4、 问题:For the circuit in Figure, current io is(     )
选项：
A:-10 μA
B:-2.5 μA
C:10/12 μA
D:10/14 μA
答案: 【-10 μA】

5、 问题:If vs=8 mV, in the circuit of Figure, the output voltage is(     )
选项：
A:-44 mV
B:-8 mV
C:4 mV
D:7 mV
答案: 【4 mV】

6、 问题:The power absorbed by the 4k ohm resistor in Figure is(     ).
选项：
A:9 mW
B:4 mW
C:2 mW
D:1 mW
答案: 【4 mW】

7、 问题:For the circuit in Figure,the output voltage v0 is(    ).
选项：
A:3 V
B:-3 V
C:-1 V
D:-2 V
答案: 【-3 V】

8、 问题:For the circuit in Figure,the output current io is(    ).
选项：
A:0.2 mA
B:-0.2 mA
C:0.1 mA
D:-0.1 mA
答案: 【-0.2 mA】

9、 问题:For the circuit in Figure,the output voltage vo is(    ).
选项：
A:5V
B:-5V
C:3.75V
D:-3.75V
答案: 【-5V】

10、 问题:For the circuit in Figure,the output voltage vo is (    )
选项：
A:5 V
B:-5 V
C:8 V
D:-8 V
答案: 【-8 V】

11、 问题:For the circuit in Figure,the output voltage vo is  (    ).
选项：
A:5 V
B:-5 V
C:3.8 V
D:-3.8 V
答案: 【-3.8 V】

12、 问题:Assume the operational amplifiers are ideal,if the input voltage is +1V，Determine vo=(      ).
选项：
A:1 V
B:-1 V
C:2 V
D:0 V
答案: 【2 V】

13、 问题:Assume the operational amplifiers are ideal,Determine vo=(    );
选项：
A:1 V
B:-1 V
C:2 V
D:0 V
答案: 【0 V】

14、 问题:For the circuit in Figure,the output voltage vo is(    )
选项：
A:150 mV
B:250 mV
C:350 mV
D:450 mV
答案: 【350 mV】

15、 问题:For the circuit in Figure,the output voltage vo is(    )
选项：
A:3.2 V
B:-0.8 V
C:2.4 V
D:1.2 V
答案: 【2.4 V】

16、 问题:For the circuits shown as Figure, assume the op-amps is ideal, and the maximun output voltage of all of the op-amps is ±13V, when time is t=0s, give the input voltage is a step in voltage, and the amplitude of the input is 100mV, when time is t=1s, determine the output voltage of each op-amp is(    ).
选项：
A:13 V
B:-13 V
C:0 V
D:100 mV
答案: 【0 V】

17、 问题:For the circuit in the Figure, the op-amps are ideal, the input  resistances of the two circuits are (   )
选项：
A:Ri1=Ri2=1k ohm
B:Ri1<Ri2
C:Ri1>Ri2
D:Ri1=Ri2=∞
答案: 【Ri1<Ri2】

18、 问题:Assume  all the Op-Amps are ideal, determine vo in terms of vi is  （    ）
选项：
A:vo=-0.5(vi+5)
B:vo=0.5(vi+5)
C:vo=2(vi+5)
D:vo=-2(vi+5)
答案: 【vo=0.5(vi+5)】

19、 问题:Determine the voltage transfer ratio vo/vs in this op-amp circuit, where R=10k ohm.
选项：
A:-1/3
B:-2/3
C:1/3
D:2/3
答案: 【-2/3】

20、 问题:Assume  all the Op-Amps are ideal, and when time t=0, the capacitor voltage vc=0, then when t=0, vo1=(     ), vo2=(    ).
选项：
A:vo1=4V,vo2=1V;
B:vo1=-4V,vo2=-1V;
C:vo1=7V, vo2=1V;
D:vo1=7V, vo2=-2V
答案: 【vo1=7V, vo2=-2V】

21、 问题:Assume  all the Op-Amps are ideal, and when time t=0, the capacitor voltage vc=0, then when t=( ? )s,  the output voltage vo=0.
选项：
A:1
B:1/70
C:1/35
D:2
答案: 【1/35】

22、 问题:For an ideal op amp, which of the following statements are not true?
选项：
A:The differential voltage across the input terminals is zero
B:The current into the input terminals is zero.
C:The current from the output terminal is zero
D:The input resistance is zero
E:The output resistance is zero
答案: 【The current from the output terminal is zero;
The input resistance is zero】

23、 问题:Difference amplifiers maybe used in (    ).
选项：
A:instrumentation amplifiers
B:voltage followers
C:buffers
D:summing amplifiers